Abstract

In the title compd., C16H17NO4S2, the 2H-chromene ring system is nearly planar, with a max. deviation of 0.070 (1) Ã…, and the morpholine ring adopts a chair conformation; the bond-angle sum for its N atom is 357.9Â°. The dihedral angle between the the 2H-chromene ring and the best plane through the morpholine ring is 89.09 (6)Â°. An intramol. C-HÂ·Â·Â·S hydrogen bond occurs. In the crystal, C-HÂ·Â·Â·O hydrogen bonds generate R 2 2(8) rings and Ï€-Ï€ interactions occur between fused benzene rings of the chromene system [shortest centroid-centroid distance = 3.5487 (8) Ã…]. [on SciFinder(R)]